Star · M0III
HIP 55645
HIP 55645 is a giant star of spectral type M0III in the constellation Centaurus, 598.7 light-years from the Sun.
| Constellation | Centaurus |
|---|---|
| Distance | 598.7 light-years (183.6 pc) |
| Apparent magnitude | magnitude 6.50 |
| Absolute magnitude | magnitude 0.18 |
| Spectral type | M0III |
| Surface temperature | 3,790 K |
| Luminosity | 269 L☉ |
| Radius | 38.1 R☉ |
| Mass | 4.49 M☉ (estimated) |
| Right ascension (J2000) | 11h 23m 56.6s |
| Declination (J2000) | −57° 52′ 50″ |
| Space velocity (relative to the Sun) | 32.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.50). Visible from the whole Southern Hemisphere and north to latitude 32° N. South of latitude 32° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1427. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 11 million years.
The Sun seen from there
From a planet around HIP 55645, the Sun would look like a star of magnitude 11.15, in the direction where our sky has the constellation Cassiopeia. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.